Ground clamp



FIG. 1 is a perspective view of a ground clamp showing my new design.

FIG. 2 is a front end view of a ground clamp showing my new design.

FIG. 3 is a rear end view of a ground clamp showing my new design.

FIG. 4 is a top view of a ground clamp showing my new design.

FIG. 5 is a left side view of a ground clamp showing my new design.

FIG. 6 is a bottom view of a ground clamp showing my new design; and,

FIG. 7 is a right side view of a ground clamp showing my new design.

The ornamental design for a ground clamp, as shown and described.